Mining machine



1,614,287 Jan.. 11, 1927. K DAVIS MINING MACHINE Filed July 1'? 1920 6 Sheets-Sheet -1` 6 Sheets-Sheet 2 Jan. 11, 1927. K. DAVIS MINING MACHINE Filed July -1'1 `192C 4 l 1,614,287 Jan. 11, 1927- K, DAVIS MINING MACHINE 6 Sheetsx-Sheei 5 Filed July 17, 1920 ATTORNEY Jan. 11, 1927. 1,614,287

MINING MACHINE Filed July 17, 1920 6 Sheets-Sheet 4 ATTORNEY 1927., f Jan 11 l K. DAvls MINING* MACHINE 6 Sheets-Sheet 5 Filed July' 17 192C -MTOR n, m m' .ATTORNEY Jan. 11, 11927. i 1,614,287

Y KK. DAVIS MINING MACHINE Filed July-1v, 1920 'e sheets-sheet e IGI 25 ples Patented Jan. 11, 1927.

UNITED STATES PATENT OFFICE.

KENNETH DAVIS, or sfr. BENEDICT, PENNSYLVANIA, AssIGNoR To REMBRANDT EEALE, E NEW YORK, N. Y.

MINING MACHINE.

Application fiiea'iuiy i7, 1920. seriai No. 397,050.

e bar.

Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious herefrom, or may be ascertained through practice with the in- 'iil Vention; the saine being realizedL and attained through the instrumentalities and combinations pointed out in the appended claims. V

The invention consists in the novel part,

l constructions, combinations and improvements herein shown and described.

he accompanying drawings, referred to herein and constituting a part hereof, illustrate one embodiment of the invention,

it and together with the descriptionV serve to explainthe principles of the invention.

Of the drawings Fig. 1 is a side elevation of a machine,

constructed in accordance with the princposition with respectto the vein, and showing by broken lines one additional position of the cutter bar;

Fig. 2 is a top plan of the machine of Fig. 1, with certain parts insection.

Fig. 3 is anend elevation of the machine looking at Figs. 1 vand 2 from the left;

Fig. 4; is a section, on an enlarged scale, taken on line 11-1 of Figs. 1 and 2, looking 225 in the direction ofthe arrows;

Fig. 5 is a fragmentary, horizontal section, on an enlarged scale, taken on line 5-5 of Fig. 1;

Fig. 6 is a vertical section, on line 6-6 of Fig. 2, looking in the direction of the arrows;

Fig. 7 is a horizontal section, on an enlarged scale, taken on line 7%7 of Fig. `6, looking in the direction of the arrows;

Fig. 8 is a fragmentary, detail horizontal section, on an enlarged scale, taken on line 8-8 of d; Fig. 9 is a fragmentary detail plan, .with parts in section, of the hand drive for the vertical cutter bar feed, the same parts being am? @n iin@ io' ic of Eig. e,

of the invention, and shown inworking adapted fragmentary detail,

Fig. 11 is an enlarged, vertical section taken on line 11-11 of Fig. 2;

Figs. 12 and 13 are diagrammatic elevations showing the change in vertical direction of the cutter bar due to moving the pivot point of the rear set of supporting arms;

Fig. 14 is a top plan, more or less diagrammatic, showing the machine cutting a lateral top kerf, with the top surface of the coal vein shown in plan;

Fig. l5 is a detail of a mechanical drive for the cutter bar raising and lowering mechanism;

Fig. 16 is a detail of devices for adapting the machine for cutting in veins of different heights taken also on line ,1 -1 of Fig. 1.

Fig. 17 is a top plan, corresponding generally to Fig. 2, but on a smaller scale, and showing a somewhat different form of positioning and controlling means for the cutter bar;

Fig. 18 `is 'a front elevation, looking at the near side of Fig. 17 and Fig. 19 is a perspective detail of one of the positioning arms for the rotary cutter bar.

The. machine of the present invention is designed to either completely cut out cores of coal or other mineral from the vein, by cutting a kerf completely thereabout, or to cut a top or bottom kerf, or to cut out a core on two 'or more sides as may be found desirable in any particular kind or condition of mining work. The machine is further both for narrow work, such as heading or entry driving, and for wide work such as room work or long wall work.

In heading or entry work the machine is vdesigned to enter the cutter endwise into the `machine in such case traveling along the face of the vein to press the rotating cutter to the work. YM. y

The machine is of such shape, construction and manner of operation as to adapt itffor,

narrow work in low 'veins when desired, or for wide work, and for rapid and easy transition oihcliange from one :kind of work 1to another.

The machine is preferably relatively low and narrow in construction and arrangement, especially adapting it for Igeneral buse in low veins and for narrow work in veins of any thickness, besides being adapted .for the other uses herein stated.

As at present preferably embodied, the machine has a rotating cutter bai` yprojecting from the 'front ofthe machine, vthe cut-ter 'bar being movable vertically to and fro relatively to jthe machine while being continuously rotated, to make a vertical kerf or cut, or the cutter bar may rbeheld liXed relatively -to the machine while being continuously .rotated about its axis. TVith .the latter arrangement, the advance of the-cutter to make the 'kerf or out is effected by Ythe travel ofthe machine itself,either forwardly or laterally.

'The machine as embodiedfis adapted for multi-directional travel, that is lboth forward travel and sidewise travel, the former for `advancing the cutter directly into the face of t-lie work, and the latter for making horizontal lsidewise cuts or kerfs with the cutter bar.

The machine also includes devices for inclining or pointing the cut-ter in different directions, both vertical and horizontal, to meet dips or variations in the direction of the vein, or to cut clearance or side room for the machine by means of the -cutter 'ba-r. These devices include ,means for inclining or pointing the cutter either upwardly or downwardly from the horizontal withI respect to the machine. rlhey also include means for inclining or pointing the cutter 'bar either to the right or to the left, this being :done in the embodied instance by pivoting or swiveling the 4working parts of 'the machine upon the machine base by Asupports arranged one rearwardly of another.

The machine is also provided with means for imparting to it the for 'ard .or sidew'ise travel already referred to .and for the purposes stated, this means consisting of a cable winding mechanism, which mechanism in itself is old Aand well known. As embodied it is provided with a plurality of speeds.

The .machine embodied` valthough the invention is net essentiallly so limited, consists of a forwardly projecting rotating cutter bar, capable of endwise and sidewise cutting, adapted for rotating in liXed position, and being also vertically movable to and fro for vertical kerf cutting, and being inclinable bot-h vertically and horizontally in both directions, a driving motor on. a

jmachine body and the machine body capable of both forward andv backward and sidewise i tra-vel, and in conjunction with the foregoing certain novel features of construction and operation which will be fully explained in 'connection with the detailed description of the embodied form of the invention.

Referring now in detail to the embodiment of fthe invention :illustrated by 'way fof example in the accompanying drawings,

the machine is adapted to remain stationary while cutting vertical kerfs and to slide upon rails 1 and 2 either longitudinally or laterally when advancing the cutter bar endwise into the work, or while 4cutting' a horizontal kerf. Additional rails 'may be used `when desirable or convenient, or other means for `traveling :the 4machine may be provided 'so .engaging with Vthe rails, sudh 'as bent rods or pins 4, passing through holes in thesbed plate 3 and .passing on either side of the rail 1 or 2.

Means are provided for 'pointing or clining the cutter 'bar horizontally Vto .the right or left, and as embodied this is effected by angularly changing the position of the machine on its bed, and for this purpose a 4platform 7 rests upon the bedi, and has a pivoted connection 8 therewith. 'll-,hns when the bed 3 is at rest Yon the rails, plat|` form 7 can be swung to the right or the left. il or the purpose of maintaining platform i' Yin any desired position, a pin 9 is adapted to pass through a hole 'in lplatform .7 and int-o any one of several holes 10 lin the bed 3 A(see Figs. 2 and 11).

In the vpresent embodiment the machine is driven by an electric motor 15 mounted on the 'platform 7. A single rotating cutter bar 16 is to enter the coal end on to get into position .to cut a kerf, vand to move to and fro vertically to cut a Vvertical kerf either while traveling upwardly or downwardly. rlhe bar is adapted also to reina-iii in lixed position while the machine is slid along the -rails, preferably drawn by a winding mechanism, to cut either a horizontal top or bottom kerf.

As embodied, the cutter bar 16 is provided with end teeth 17, and with side teeth 18 which are disposed about its entire cylindrical surface. The shank of the cutter bar 16 is connected to the shaft of motor 15 and is socketed in a shaft 94, journaled in a bearing sleeve 1.9.

Means are provided for imparting up and down vertical motion to the cutter bar 16 while maintaining it level or horizontal throughout such movement; ln `the einbodied form thereof, a pair of links or rods 22 and 23 are pivoted, respectively, to the opposite sides of the sleeve 19 at 24 and 25. The arms 22 and 23 are pivoted at their opposite ends, respectively, to standards or posts 26 and 27 fixed-to and extending upwardly from the platform 7.

Extending backwardly from and fixed to or integral with sleeve 19 are apair of rigid` arms 28 and 29. Pivoted tothe ends of arms 28 and 29, respectively, at 32 and 33 are a pair of links or rods 30 and 31. VLinks 3() and 31 are pivotally mounted at their opposite ends 34 and 35, so as to effect the horizontal level or inclination of the cutter bar. The particular construction of this mounting` willV be later described. The two pairs of pivoted arms 22 and 23, and 30 and 31, are preferably at both ends of each pair pivoted at the same horizontal level, which is preferably the horizontal level of the motor shaft. They constitute a parallel motion raising and lowering mechanism for the cutter bar 16. That is, 4the bar will be raised or lowered and will be maintained at all times in a horizontal position, or in a succession of parallel positions.

Means are provided for raising and lowering the rotating cutter `bar 16, and asembodied standards 40 and 41 are carried upon and extend upwardly from the platform 7. Each of these standards on its inner side has a vertically disposed guideway 42, and mounted with a sliding fit in leach guideway is a rectangular nut 43. Each nut 43 is internally screw-threaded 0n a corresponding vertically disposed screw rod 44. Each screw rod 44 is journaled at its bottom 45 and at its top 46 (Fig. 4) in the corresponding standard 40 or 41.

The two nuts 43, travel up and down on their respective screw rods 44, due to the rotation in one direction or the other of the screw rods, and the nuts 43 have bearings, by suitable connections, in the corresponding cutter bar supporting arms 22 and 23, and thereby raise and lower the cutter bar with the travel of the nuts alongA their screw rod.

As embodied the arms 22 and 23, respectively, haveguideways 50 and 51 formed therein (Figs. 1, 2 and 8), and within these guideways are fitted, respectively, angular blocks 52, having a sliding fit in the guideways. Projecting from each of the nuts 43 is a cylindrical pin 53, which pin fits in a cylindrical. recess inthe corresponding block 52. Thus a mechanically close connection is maintained in the mechanism, each block 52 and the pin 53 fitting thereinto having relative rotation as the nuts 43 travel upwardly or downwardly on their respective screw rods, the blocks 52 lifting or lowering the arms and the cutter bar, and sliding Vto and fro in their guideways 50 and 51, as

the arms 22 and 23 swing about their pivotalV mountings 26 and 27 (see Figs. 1,-2 andv 4). Arms 30 and 31 move with arms 22 and 23 and maintain the cutter bar horizontal or in uniform inclination.

The standards 40 and 41 are vertically flat or plane on their inner Vfaces and arms 22 and 23 have fiat and parallel outer vfaces fitting the corresponding fiat inner faces of the Vstandards 40 and 41 with a close sliding lit. 27 of the arms 22 and 23 in cooperation with the sliding fit of the arms within posts 40 and 41 furnish a wide and rigid bearing structureto brace and hold cutter bar 16 against lengthwise strain and displacement, that is, against side thrust due to the rotating cutter pressing sidewise to the work.

The meansy for raising and lowering the rotating' cutter bar 16, shown in Figs. 1, 2 and 4 is hand-operated, and comprises two bevel gears 55 and 56, fixed, respectively, to the screwt-hreaded shafts-44 at the lower ends thereof. Meshing with bevel gear 55V is a bevelpinion 57, which pinion is fixed on a shaft 58. Shaft 58 is journaled in the machine frame, and fixed to the outer end of the shaft is a sproket wheel 59. Meshing with the bevel gear 56 on the other screw shaft 44 is a'beveled gear 60 which is fast on agshaft 61. Shaft 61 is journaled in the machine frame and a sprocket wheel 62 is fast to the exterior end-of the shaft.

A sprocket chain 63 runs over the sprocket wheel 59'A and also over a sprocket wheel 64, which latter is fast on a shaft 65, this shaft extending across the machine and being journaled in bearings supported on the platform 7. At its opposite end, shaftV 65 has fixed thereto a sprocket wheel 66, over which runs a sprocket chain' 67, the sprocket chain running also over sprocket wheel 62. Thus both of the screw shafts 44 turn always in unison with shaft 65 and with each other, and nuts 43 travel up and down together, thus keeping the arms 22 and 23 in alinement with each other. The manually-operated devices for actuating the mechanism just described comprises a beveled gear 70, fixed on shaft 65, and meshing with gear 7 0 is a-beveled gear 71, which is fixed on a shaft Shaft 72 is journaled in bearings at 73 and 74 on the platform 7. Shaft 72 is provided with a hand wheel 75, andvby rotation of the hand wheel 75 in either direction, the rotating cutter bar 16 is traveled upwardly ordownwardly and thus kept to its work in cutting the kerf or to move it for any other purpose.

In Fig. 15, automatically operatedmcans for traveling the cutterV bar up and down are provided. As embodied, a-Vgear wheel 76 is fixed on motor shaft 90, and meshing therewith is a gear wheel 77, splined on a I Thus the pivot bearings 26 andy bearings 79 and 80 mounted on the 'base or platform 7. Hub 81 of gear wheel .77 has an annular groove 82 Iformed therein which is straddled by `the yforked or yoked end 89 of a suitable lever mechanism 88 operated by -a hand lever 87. By operating lever 83 gear wheel 77 may be slid into and outA of mesh with gear wheel 76. FiXed on shaft 78 is a worm wheel 33 meshing with a wheel 84, which is fixed on shaft't already described. Shaft 65 it will be recalled rotated the screw-threaded rods 44 to raise and :lower arms 22 and 23 and therewith the cutter' bar 16. 1t will be clear that the hand operated and the mechanically operated vertical feeds for the cutter bar may both be -on the machine and may be used alternatively.

rlhe embodied lform of connections for rotating the cutter bar 16 from the motor 15, in conjunction with the elevating and depressing means previously described, comprises suitable flexible connections, and preferably a clutch. As embodied, the sha-ft 90 of the motor is connected to a universal yjoint 91, 'through which joint Vit drives a shaft 92, which latter shaft connects to a universal joint 93. Joint 93 drives a shaft 94, which shaft is journaled inthe sleeve 19. The forward end of shaft 94 is internally recessed to receive the yshank of the cutter bar i16,and suitable means for locking the cutter bar in position in the bearing sleeve 19 are provided, such as a clamping screw 96.

rlhe embodied form of clutch as applied to the shaft 92, includes a clutch jaw 97, :fixed to the shaft, and a clutch jaw 93 fixed to a sleeve 99, which sleeve is splined on shaft 92, the shaft being broken or cut off with-in the sleeve, as show-n in Fig. 2 in a weil-known manner. rllhus the clutch 97 and 98 serves to throw in and 'out the motor with respect to the rotation of the cutter bar.

Means are provided for inclining the cutter bar either upwardly or downwardly and for feeding it upwardly or downwardly while maintaining it in such inclined position, the cutter bar being shown downwardly inclined in the diagram of Fig. 12 and upwardly inclined in the diagram of Fig. 13.

In the embodied form of effecting this chang-c in position of the cutter bar, the pivot points 34 and 35 of the arms 30 and 31 are raised above or depressed below the level cf the pivot points 26 and 27 for the arms 22 and 23, respectively. This will be clear on reference to the center line 100 of Figs. 12 and 13. The pivots 34 and 35 for arins 30 and 31, respectively, are in the form oi' pins lined in the opposite reaches of a yolre 104 (see Figs 1, 2, 6 and 7). rilhe yoke 104 is provided with vertically disposed guides 105 and 106, working in corresponding guideways in standards or posts Vis supportedv in the machine frame.

107 and 108, 'fixed to the plat-form 7 of the machine.

ln the center of its bottom or cross reach, yoke 104 has an internal;screw-threaded boss 109, and screw-threaded into the boss is a screw rod 110, the lower end of which is rotatably supported on the platform 107. Screw rod 110 is provided with a turning head 111, lined thereto. Thus as the head 111 is turned in one direction or the other, yoke 104 will move either upwardly or downwardly in its guides 107 and 108, and will thereby carry the pivot centers 34 and 35 of the arms 30 and 31 either above or below pivot centers 2G and 27 of the arms 22 and 23, effecting the desired inclination either upwardly or downwardly of the rotating' cutter bar.

Means are provided by the invention for traveling the entire machine ahead and back, or crosswise, and as embodied said means comprise p wer-operated winding devices. For this purpose a beveled pinion is lined to the rear end of motor 15, and meshing therewith is a beveled gea-r wheel 121, lined on a vertically disposed shaft 122, which shaft is suitably .journaled Yin the fra-me (see Figs. 2, 3 and Fixed on shaft 122 is a. worm 123, and meshing with worm 123 is a worm wheel 124, which worm wheel is loose on a shaft 125, suitably jour'- naled in the machine casing. Connections are provided in this embodiment for giving two speeds to the winding mechanism. rEhe hub 126 of worm wheel 124 is sleeved loosely on shaft 125, and integral therewith, or fixed thereto, is a gear wheel 127.

Meshing with the gear wheel 127 -is a gear wheel 123, having its hub 129 inthe form of a sleeve loose on shaft 130, which shaft Fixed to the oppositerend of the sleeve 1297is a gear wheel 131. Fixed on shaft is a pinion 132. Gear wheel 128 with its sleeved hub 129 and gear wheelv 131 are slidable along shaft 130, whereby gear wheel 123 is always in mesh with gear wheel 127 and is driven thereby, 'out gear wheel 131 passes into and ont of mesh with the pinion 132, which is fixed on shaft 125.

Means are `provided for directly clutching worm wheel 124 to a shaft 125 for one ofthe winding speeds, and as embodied there is formed on vthe end of sleeve 129 a clutch jaw 134.` liiounted on shaft 125 and having splined c,n-eetion therewith is a clutch member 135, which is thus rotatable with shaft but is slidable therealong to pass into and out of engagement with clutch jaw 134. Clutch jaw is provided with an annular groove 133 into which groove project pins on a pair of yoled arms 137, which arms straddle the clutch Vjaw 135. Arms 137 are fined to a bloei; 138, which is mounted in fixed position upon the sleeved hub 129 of gear wheel 128. Connected to block 138 is a. pivoted lever 139. v Y

The manner of operation of the mechaiism just described is substantially las folowsz- Wvorm wheel 124 rotates with the worm 122, but is loose on shaft 125, which shaft is the driving shaft for the winding mechanism. Gear wheel 128 rotates with gear wheel 127 and worm wheel 124. When lever 139 is moved to throw clutch members 134 and 135 into mesh, worm wheel 124 is connected direct to shaft 125`to drive the winding mechanism. This is the position of parts shown in Fig. 5. At this time, gear wheels 128 and 131 are rotating idly, as gear wheel 131 is out of mesh with pinion 132.

lVhen lever 139 is thrown in the opposite direction, clutch members 134 and 135 are unclutched, and gear wheels 128 and 131 are slid along shaft 130 from the position shown in Fig. 5 until gear wheel 131 meshes with pinion 132. )Vorm wheel 124 then drives shaft 125 through gear wheels 128 and 132.

The gear Wheels are so proportioned as to give a different speed for the shaft 125 relatively to the worm Wheel 124 than when they are directly connected.

The embodied form of winding means comprises a worm 144 fixed on shaft 125 and meshing with a worm wheel 145 (see Figs. 2 and 3). TWorm wheel 145 is `fixed on a shaft'146, which is vertically disposed and journaled in bearings carried by the machine frame. Loose on shaft 146 is a drum 147, provided with a cone clutch member 148. The interior cooperating cone clutch member 149 is mounted on shaft 146 to rotate therewith, but is slidable therealong. The clutch member 149 has an annular-ly grooved collar 150, with which collar engages one ond of a foot lever 151, the foot lever being pivoted at 152. Foot lever 151 may be provided with a suitablev spring 153 and a suitable detent 160, the spring operating to throw the clutch out and the detent to hold the clutch in engagement,I in a` well known manner. A suitable winding cable 154 may be wound about drum 147, and may pass over a suitable shoe 155, properly positioned, and an idler or guiding pulley 156. n

1n Fig. 14 of the drawings the machine is shown making either a top or bottom kerf cut across the face of a room or across a long wall, the rotating cutter bar being held from a vertical motion, and the machine being wound or impelled by the winding means sidewise along the trackway to press the cutter bar to the advancing work.

In 'this sidewise movement of the cutter bar, it will be seen that the successive positions or stages of the cutter bar are substantially parallel to one another. The cable is usually anchored to a jack post 157 in a well known manner. When it is desired to drive thecutter bar end on or endwise into the face of the work, the position of the jackpost is changed to the position indicated at 157', the pins 4 are removed, and the machine may be slid or skidded across the rails; an additional vrail or rails may be employed, or rollers may be placed under the machine.

In Fig. 16 is shown means for extending the vertical guides for the supporting arms for the cutter bar mechanism, whereby the range of adaptation of the machine for veins of varying heights is greatly increased.

The guides 40 and 41 are shown with an intermediate flange joint, one upper part of one length being substituted for another for veins of different heights. The flanges 158 are held together by bolts 159. 1t is more convenient -to substitute screw rods 44 of different lengths one for another. The sliding connection in the driving shaft 92 may also be utilizedv for this purpose. The general structure of the machine may be sufficiently lowto operate in very thin seams and the cutter may be raised to cut through and along the top of very high seams or veins, giving the machine a wide range of usefulness or adaptability in this respect with but slight changes in the mechanism as above outlined.

In Figs. 17, 18 and 19, a somewhat different form of positioning and controlling means for the rotary cutter bar is shown, which raises and lowers the bar and also tilts it when desired. For-certain conditions of actual service this is at present the preferred form of this mechanism, although it will be understood that both showings of the mechanism is exemplary and not restrictive of the invention. j

Referring primarily to the means, as exempliel in these figures. for raising and lowering the cutter bar (Figs. 17 and 18), the cutter bar 16 is mounted in a journal socket or bearing 19, as already described. The journal socket or sleeve 19 is pivotally supported at either side' thereof at 160 and 161011 a pair ofv arms 162 and 163. Arms 162 and 163, respectively, are pivotally mounted at 164 and 165 on posts or uprights 166 and 167, carried on the machine frame.

For the purpose of swinging and positioning arms 162 and 163, each of said arms has fixed thereto or integraltherewith arms 168 and 169 (Figs. 13 and 19) carrying a geared sector 170. Meshing with each geared sector 170 is a corresponding worm 171, having like worm or spiral gear teeth.

. The worms 171 are fixed, respectively, on 'shafts 172 and 173, and means are provided for, rotating these shafts together in either direction to swing arms 162 and 163 up or down together, to raise or lower the cutter bar 16. As embodied, a sprocket chain 174 runs over a sprocket wheel on shaft 172 and over a sprocket wheel 176 on shaft 17 3, thereby causing these two shafts to move together, and therewith the arms 162 and 163. A shaft 177 forms a continuation of shaft 172 and is provided with a crank or handwheel 178, whereby the entire mechanism is moved as described.

The mechanism or means cooperating with the foregoing in the positioning and control of the cutter bar 16, as embodied, comprises a pair of arms 179 and 180, fixed to or intcgral with the journal socket 19 at either side thereof and extending ybackwardly therefrom.

Pivoted to arm 179 is an arm 181, the other end of arm 181 being pivoted. at 182 to a support or post 183. Likewise, pivoted to arm 180 is an arm 184, which at its other end is pivoted to a support or post 186. Arms 181 and 184 are preferably connected together by cross-bracing 187.

Supports 183 and 186 are connected together by a cross piece 188 which stiffens the structure and causes or cooperates in causing the two arms 181 and 184 to move together in tilting the cutter bar 16.

In the embodied form of means for tilting the cutter bar 16 either up or down, the rear pivotal bearings of` arms 181 and 184 are raised or lowered, as shown in dotted lines in Fig. 18, and indicated by reference numeral182, which is the rear pivot for bar 181. Asembodicd, the supports 183 and; 186 slide within vertically recessed posts 188 and 189, and they have gear teeth 190 formed thereon, along one of their vertical edges. Meshing with the straight gears 193 on the supports 183 and 186 are pinions 191 fixed on a shaft 192.

On shaft 192 is a worm wheel -meshing with a worm 193 -on a shaft 194; Shaft 194 is journaled in bearings 1951and 196 on the machine frame. Fixed on shaft 194 is a ratchet Wheel 197, and journaled on the shaft about the ratchet wheel is a handle 198 containing a pawl cooperating with the ratchet Wheel. This'is preferably a reversible pawl, and may be of usual or convenient form, the details thereof constituting no part ofy the presentA invention. By pulling out button 203 and turning the handle through 180 degrees the reversal in direction isY effected.

This mechanism provides controls for raising and lowering the cutter bar 16, and also for tilting it, located near the rear of' the machine and adjacent to the controls for the winding mechanism for traveling the machine, as already described.

1n Fig. 17 the guiding sheave or pulley 156 for cable 154 is slidable along the edge of the machine frame and is held in any desired position therealong by bolts 199 and 200.

In this mechanism, as shown in Fig. 17

a double universal joint 205 and 206. is employed to provide for a greater range of raising and lowering than would be possible with a single universal joint. By raising the level of the entire machine, this increased range of operation of the cutter bar can be taken advantage of below well asabove the machine.

rllhe invention in its broader aspects is not limited to the specific mechanisms shown and described but departures may be made therefrom within the scope of the accompanying claims without departing from the principles of the invention and without sacrificing its chief advantages. Y

That li claim is 1. A mining machine including combination a rotating cutter bar, a bearing in which; the cutter bar is ournaled, a plurality ot pivoted` supports for the bearing arranged one rearwardly of another for moving the cutter in a vertical plane to positions successively parallel and means for rotating` the cutter bar in-its various positions and means for changing the location of the pivotal bearing of one of said supports to change the vertical direction of the cutter bar.

2. A mining machine including in combination a rotating cutter, a bearing inlwhic14 the cutter bar is journaled, a pair of vertie cally swinging arms pivoted on the opposite sides of said bearings, and vertical guides at the sides of said arms to taire the side thrust of the bary when makinga horizontal cut.

3. A mining machine including in combination ay rotating cutter bar, a bearing in which thecutter baris journaled, a plurality of pivoted supports for the bearing arram fl one rearwardly of'y another for moving cutter in a vertical plane to positions snccessively parallel and means for rotating the cutter bar in its various positions, and means for vertically raising and lowering the cutter bar and its bearing.

4. A mining machine vincluding in co nation a rotating cutter bar, a bearing which the cutter' bar is journaled, a plural' of pivoted supports for the bearing arranger one rearwardly of another for moving the cutter in a vertical plane to positions snccessively parallel and means for rotating the cutter bar in its various positions, means for changing the location of the pivotal bearing Vof one of said supports to change the vertical direction of the cutter bar, and means for raising and lowering the cutter bar and its bearing.

5. A mining machine including in combination a rotating cutter, a bearing in which the cutter bar is jour-naled, a p air of vertically swinging arms pivoted on the opposte sides of said bearings, and vertical guides at the sides of said' armsY to talle the side thrust of the bar when making. a horizontal cut and means for raising and lowering the cutter bar and its bearing.

6. fr mining machine including in combination a frame, a cutter bar, a bearing therefor, supporting and positioning means therefor including a pair `of arms pivoted at one end to the bearing and at the other end upon vertically slidable supports, gear teeth on said supports, and pinions meshing with said supports to raise-and lower them to tilt the cutter bar and vmeans for rotating said pinions together.

7. A. mining machine including in combination a frame, a cutter bar, a bearing therefor, supporting and positioning means therefor including a pair of arms pivoted at one end to the bearing and at the'other end upon vertically slidable supports, gear teeth on said supports, and pinions meshing with said supports to raise and lower them to tilt the cutter bar and manually operated means for rotating said pinions together.

8. A mining machine including in combination a rotating cutter bar, means for rotating the cutter bar, means for moving the cutter bar up and down in a substantially vertical plane, means including' a winding cable and a winding drum for traveling the machine in a plurality of directions to cause the cutter bar to cut in different ways.

9. A mining machine including in combination a rotating bar, means for rotating the bar, means for'moving the cutter bar to a plurality of horizontal, parallel positions, and means including a winding drum and a winding cable, for traveling the machine either ahead or sidewise.

l0. In a mining machine the combination of a cutter bar, means for rotating the cutter bar, means, including a pair of links, each pivoted at its opposite ends to the cutter bar and to the machine frame, respectively, the points where the two linksy are pivoted to the cutter bar being spaced apart longitudinally of the cutter bar, and means `for variably positioning one of the pivotal points of one of the links, for moving the cutter bar in one vertical plane to successive positions in that plane which may be parallel to, or may be at an angle to, the initial position.

1l. In a mining machine the combination of a cutter bar unit comprising a cutter bar and a bearing therefor, two devices, each pivoted to the mining machine at one end and pivoted t-o the said cutter bar unit at the other end, at separated points longitudinally thereof, and means for raising and lowering each of said devices independently.

l2. In a mining machine the combination of a cutter bar unit comprising a cutter bar and a bearing therefor, two devices, each pivoted to the mining machine at one end and to the cutter bar unit at the other, at separated points, means for raising and lowering one of said devices for moving the cutter bar to successive parallel positions, and means for raising andlowering the other of said devices for changing the angular position of the cutter bar. l

13. In a mining machine the combination of a cutter bar unit comprising a cutter bar and a bearing therefor, two pairs of links, the lower ends of which are pivoted to the mining machine and the upper ends of which are pivoted to the cutter bar unit at separated points longitudinally thereof, means for raising and lowering one pair of links, and means for raising and lowering the lower lpivoted ends of the other pair of links for changing the angular positioning of the cutter bar.

14. In a mining machine, the combination of a cutter bar, arms respectively pivoted to the cutter bar at spaced points longitudinally thereof, the other ends of said arms being pivotally mounted, and means for applying a force to one of the arms intermediate its ends for raising or lowering the cutter bar. f i

l5. In a mining machine, the combination of a cutter bar, arms respectively pivoted to the cutter' bar at spaced points longitudinally thereof, the other ends of the arms beA ing pivotally mounted, and means for applying a force to that arm which is pivoted nearer the cutting end of the cut-ter bar for raising and lowering said bar.

16. vIn a miningrmachine, the combination of a cutter bar, arms respectively pivoted to the cutterpbar at spaced points longitudinally thereof, the other ends of the arms being pivotally mounted, and means for applying a force to that arm which is pivoted nearer the .cutting end of the cutter bar for raising and'lowering said bar, said force applying means acting on its arm intermediate the pivot points thereof.

17. In a mining machine, the combination of a cutter bar, arms respectively pivoted Vto the cutter bar at spaced points longitudinally thereof, the other ends of the arms being pivotally mounted, said arms lconstituting a link motion for moving the bar to positions which are successively parallel, means for applying a force to one of said arms intermediate its ends for raising and lowering the cutter bar, and means for rotating the bar when in its successively parallel positions.

. 18. In a mining machine, the combination of al cutter bar, arms respectively pivoted to the cutter bar at spaced pointslongitudinally thereof, the other ends of the arms being pivotally mounted, said arms forming a link motion for moving the bar to positions which are successively parallel, means for applying a force to that arm which is pivoted nearer the cutting end of the cutter bar, for raising and lowering it, and means for til? rotating the cutter ba-r iny its successive positions.

19. In a mining machine, the combination of a cutter bar7 arms. respectively pivoted tol the cutter bar at spaced points longitudinally thereof,l the other ends of the arms beingl pivotally mounted, said arms forming link motion for moving the bar to positions which are successivelyy parallel, means for applying a force to that arm, intermediate; its pivot points, which is pivoted nearer the cutting end of the cutter bar,y for raising and lowering` it, and means tor rotating theA critter bar in its successive positions.

20. In a. mining machine, the combination oi' a cutter bar, a pair of arms pivoted to the cutter bar, a second pair oi' arms pivoted to the cutter bar, further along the bar, the other ends oi all said arms beingl pivotal'ly mounted, four corresponding ends otthe arms forming a four-point support izo-rV the cutter bar, and the other four corresponding ends forming a four-point operating base for the cut-ter bar, and means for applying a torce to one pair of arms for raising and lowering` the bar.

21;. In a mining machine, the combination of a cutter bar, a pair of arms pivoted to the cutter bar, a second pair of arms pivoted to the cutter bar further along the bar, the other ends of the bar being pivotally mou-nt` ed, tour corresponding ends of thek arms forming a four-point support forv the cutter bar, and the other four corresponding ends forming a four-pointr operating baseA tor the cutter bar, and means for applying, a` force to that pair of arms engaging with the cutter bar nearer its cutting end, for raising and lowering the cutter bar.

22. In a mining machine, the combination ot a cutter bar, a pair of arms pivoted to the cutter bar, a second pair of arms pivoted to the cutter bar, further along the bar, the other ends of all said arms being pivotally mounted, four corresponding ends of the arms forming a four-point support for the cutter bar, and the other four corresponding ends forming a four-point operating base for the cutter bar, and means for applying a torce to one pair of arms intermediate the pivotal points of the respective arms, for raising and lowering the bar.

23. In a mining machine, the combination ot a critter bar, a pair of arms pivoted to the cutter bar, a second pair of arms pivoted to the cutter bar further along the bar, all said arms forming a. link motion for moving the cutter bar to positions successively parallel, means Jfor applying a force to one pair ot arms intermediate the pivot points of the arms, and means for rotating the cutter bar in itsl different positions.

24. In a mining machine, the combination of a cutterv bar, a pair of arms pi'voted to the cutter bar, a second pair of arms pivoted to the cutter bar, further along the bar, all said arms formingv a link motion for moving the cutter bar to positions successively parallel, means for applying a force to that pair ot arms pivoted toy the cutter bar nearer its cutting end, and means for rotating the cutter bar in its dilierent positions.

25. In a mining machine, the combination of a cutter bar, a pair of arms pi-.voted to the cutter bar, a second pair of arms pivoted to the cutter bar further along the bar, all said arms forming a link motionfor moving the cutter bar to positions successively parallel, means for applying a force to that pair ot arms pivoted to the cutter bar nearer its cut-ting end, said force being applied between the pivoted points of these arms, and means for rotating the cutter bar in its various positions.

26. In amining machine, the combination of a cutter bar, arms respectively pivoted to the cutter ba-r at spaced points longitudinally thereof, the other ends off said arms being pivotally mounted, means for applying a torce to one of theV arms intermediate its ends for raising orv lowering the cutter bar and means for moving the cutter bar bodily sidewise to successively parallel positions Jfor cutting a, substantially horizontal lrerf.

27. In a mining machine, the combination et a cutter bar, arms respectively pivotcd to the cutter bar at spaced points longitudinal-ly thereoiii,l the. other ends/of the arms being pivotally mounted, means for applying a force tothat arm which is pivoted nearer the cutting end of the cutter bar for raising and lowering` said bar and means Jtor moving the cutter bar bodily sidew-ise toy successively parallel positions for cuttingl a substantially horizontal kerf.

E28.A In av mining machine, the combination of a cutter bar, arms respectively pi-voted tothe cutter bar at spaced points longitudinally thereof,` the. other ends of the arms be# ingpivotally mounted, said arms constituting a link motion for moving the bar to posiftions which are successively parallel', means for applying a force to one of said arms intermediate its ends for raising and lowering the cutter bar, means for rotating thel bar when in its successively parallel positions and means for moving the cutter bar bodily sidewiseto successively parallel posititns for cutting a substantially horizontal ker 29'. In' a mining machine, the combination oi a cutter bar, arms respectively pivoted to the cutter bar at spaced` points longitudinally thereof,l the other ends of said arms being pivotal-ly mounted, means for applying` a torce to one of the arms intermediate its: ends for raising or lowering thel cutter bar and means for moving the cutter bar bodily sidewise at dilierent speeds to succes of a cutterbar, arms respectively pivoted to the cutter bar at spaced points longitudinally thereof,the other ends of the arms being pivotally mounted, means for applying a force to that arm which is pivoted nearer the cutting end of the cutter bar for raising 'and lowering said bar, said force applying means acting on its arm intermediate the pivot points thereof, and means for moving the cutter bar bodily sidewise at different speeds to successively parallel positions for cutting a substantially horizontal kerf.

3l. In a mining machine, the combination of a cutter bar, arms respectively pivoted to the cutter bar at spaced points longitudinally thereof, the other ends of the arms being pivotally mounted, said arms forming a link motion for moving the bar to positions which are successively parallel, means for appl ino' a force to that arm which is pivoted nearer the cutting en d of the cutter bar, for raising and lowering it, means for rotating the cutter bar in its successive positions and means for moving the cutter bar bodily sidewise at different speeds to successively parallel positions for cutting a substantially horizontal kerf.

32. -In a mining machine, the combination of a cutter bar, a pair of arms pivoted to the cutter bar, a second pair of arms pivoted to the cutter bar, further along the bar, the other ends of all said arms being pivotally mounted, four corresponding ends of the arms forming a four-point support for the cutter' bar, and the other four corresponding ends forming a four-point operating base for the cutter bar, means for applying a force to one pair of arms for raising and lowering the bar and means for moving the cutter bar bodily sidewise at different speeds to successively parallel. positions for cutting a substantially horizontal kerf.

88. In a mining machine, the combination of a cutter bar, a pair of arms pivoted to the cutter bar, a second pair of arms pivoted to the cutter bar further along the bar, the other ends of the bar being pivotally mounted, foury corresponding ends of the arms forming a four-point support for the cutter bar, and the other fo-ur corresponding ends forming a four-pointv operating base for the cutter bar, means for applying a. force to that pair of arms engaging with the vcutter bar nearer its cutting end, for raising and lowering the cutter bar and means for moving the cutter bar bodily sidewise at different speeds to successively parallel positions for cutting a substantially horizontal kerf.

34. In a mining machine, the combination of a cutter bar, arms respectively pivoted to the cutter bar at spaced points longitudinally thereof, the other ends of'said arms being pivotally mounted, means for applying a force to one of the arms intermediate its ends for raising or lowering the cuttery bar and means including a drum and winding cable for moving the cutter bar bodily sidewise to successively parallel positions for cutting a substantially horizontal kerf. 35. In a mining machine, the combination of a cutter bar, arms respectively pivoted to the cutter bar at spaced pointslongitudinally thereof, the other ends of the arms being pivotally mounted, means for applying a force to that arm which is pivoted nearer the cutting end of the cutter bar for raising and lowering said bar, said force applying means acting on its arm intermediate the pivot points thereof and means including a drum, winding cable, and change speed gear for driving the drum, for moving the cutter bar bodily sidewise at differ-- ent speeds to successively parallel positions for cutting a horizontal kerf.

36. In a mining machine, the combination of a cutter bar, arms respectively pivoted to t-he cutter bar at spa-ced points longitudinally thereof, the other ends of the arms being pivoted to the machine, said arms constituting a link motion for moving the bar to positions successively parallel, means for applying a force to one of said arms for raising and lowering the cutter bar, means for variably positioning the end of one of the arms that is pivoted to the machine for changing the angle of the cutter bar, and means for rotating the cutter bar in its various positions.

37. In a mixing machine, the combination of a cutter bar, arms respectively pivoted to the cutter bar at spaced points longitudinally thereof, the other ends of the arms being pivoted to the machine, said arms constituting a link motion for moving the bar to positions successively parallel, means for applying a force to that arm which is pivoted to the cutter bar nearer its cut-ting end, the force being applied between the pivoted points of said arm, for raising and lowering the cutter bar, means for variabl7 positioning the end of the other arm that is pivoted to the machine, for changing the angle of the cutter bar, and means for rotating the cutter bar in its various positions.

38; In a mining machine, the combination of a cutter bar, arms respectively pivoted to the cutter bar at spaced points longitudinally thereof, the other ends of the arms being pivoted to the machine, said arms constituting a link motion for moving the bar to positions successively parallela means for applying a force to one of said arms for raising and lowering the cutter bar, means for variably positioning the end of one of the arms that is pivoted to the machine for changing the angle of the cutter bar, means for moving the cutter bar bodily sidewise vof a cutter bar, arms respectively pivoted to the cutter bar at spaced points longitudinally thereof, the other ends of the arms being pivoted to the machine, said arms constituting a link motion for moving the bar to positions successively parallel, means for applying a force to that arm which is pivoted Yto the cutter bar nearer its cutting end, the

to the machine, for changing the angley ottlie cutter bar, means for moving the cutter bar bodily sidewise to successively parallel positions, and means for rotating the cutter bar in its various positions.

In testimony whereof, I have signed lmy name to this specification.

KENNETH DAVIS. 

